You may not have a realistic answer until you see the Mohs surgeon. Your derm has followed their usual protocol assuming you need reconstructive follow up.
The Mohs surgeon deals with the size, location and extent of the squamous cell. The frozen sections they
evaluate and what they need to consider for control
of any bleeding will be a factor.The Mohs surgeon
likely has their routine established with the plastic surgeon and can communicate with pictures for planning.
Some areas on the scalp will heal with secondary intention and are suitable for gradual healing without closure.
Pathology exam will also indicate how much follow up care required.
Follow your preop instructions especially with regard to
any medication or supplements that could affect bleeding and you should do well. Understandably you are a bit apprehensive and want to plan for the best results.